<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>增加删除</title>

</head>

<body>
    <div id="app">
        <button @click="btnRandom">走一走</button>
        <ul>
            <li v-for="(item, index) in dataList" :key="item.id">
                <span>{{ item.id }}</span>
                <button @click.stop="delBtn(item.id)">删除</button>
            </li>
        </ul>
    </div>
    <script src="http://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"> </script>
    <script>
        const app = new Vue({
            el: "#app",
            data: {
                dataList: [],
                randomVal: "",
                nextId: 1, // 用于生成唯一的 ID
            },
            methods: {
                btnRandom() {
                    // 使用递增计数器生成唯一的 ID
                    this.dataList.push({ id: this.nextId++, content: "删除" });
                },
                delBtn(id) {
                    this.dataList = this.dataList.filter((item) => item.id !== id);
                }
            }
        });
    </script>
</body>

</html>